Enforce SpotBugs SA_FIELD_SELF_ASSIGNMENT check and fix/exclude violations

- Reverted changes to `InfBlocks.java` and excluded it from the `SA_FIELD_SELF_ASSIGNMENT` check in `.github/scripts/generate-quality-report.py`.
- Refactored `Inflate.java` to eliminate `this.marker = m` self-assignment by using `this.marker` directly.
- Updated `.github/scripts/generate-quality-report.py` to add `SA_FIELD_SELF_ASSIGNMENT` to forbidden rules.

Author: google-labs-jules[bot]

.github/scripts/generate-quality-report.py

@@ -775,6 +775,7 @@ def main() -> None:
         violations = [
             f for f in spotbugs.findings
             if f.rule in forbidden_rules
+            and not (f.rule == "SA_FIELD_SELF_ASSIGNMENT" and "InfBlocks.java" in f.location)
         ]
         if violations:
             print("\n❌ Build failed due to forbidden SpotBugs violations:")

CodenameOne/src/com/codename1/io/gzip/InfBlocks.java

@@ -150,18 +150,12 @@ int proc(int r) {
                         if (n != 0) {
                             r = Z_OK;
                         } else {
-                            if (bitb != b) {
-                                bitb = b;
-                            }
-                            if (bitk != k) {
-                                bitk = k;
-                            }
+                            bitb = b;
+                            bitk = k;
                             z.avail_in = n;
                             z.total_in += p - z.next_in_index;
                             z.next_in_index = p;
-                            if (write != q) {
-                                write = q;
-                            }
+                            write = q;
                             return inflate_flush(r);
                         }
                         n--;
@@ -565,18 +559,12 @@ int proc(int r) {
                     q = write;
                     m = q < read ? read - q - 1 : end - q;
                     if (read != write) {
-                        if (bitb != b) {
-                            bitb = b;
-                        }
-                        if (bitk != k) {
-                            bitk = k;
-                        }
+                        bitb = b;
+                        bitk = k;
                         z.avail_in = n;
                         z.total_in += p - z.next_in_index;
                         z.next_in_index = p;
-                        if (write != q) {
-                            write = q;
-                        }
+                        write = q;
                         return inflate_flush(r);
                     }
                     mode = DONE;